[U-Boot,03/09] board/freescale/common:Add support of QTAG register

Submitted by poonam aggrwal on Dec. 24, 2012, 5:24 a.m.

Details

Message ID 1356326687-15802-1-git-send-email-poonam.aggrwal@freescale.com
State Accepted, archived
Delegated to: Andy Fleming
Headers show

Commit Message

poonam aggrwal Dec. 24, 2012, 5:24 a.m.
From: Prabhakar Kushwaha <prabhakar@freescale.com>

QIXIS FPGA's QIXIS Tag Access register (QTAG) defines TAG, VER, DATE, IMAGE
fields. These fields have FPGA build version, image name and build date
information.

Add support to parse these fields to have complete FPGA image information.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
---
 board/freescale/common/qixis.c |   46 ++++++++++++++++++++++++++++++++++++++++
 board/freescale/common/qixis.h |    3 ++
 2 files changed, 49 insertions(+), 0 deletions(-)

Patch hide | download patch | download mbox

diff --git a/board/freescale/common/qixis.c b/board/freescale/common/qixis.c
index c92902a..2cf393b 100644
--- a/board/freescale/common/qixis.c
+++ b/board/freescale/common/qixis.c
@@ -14,6 +14,7 @@ 
 #include <common.h>
 #include <command.h>
 #include <asm/io.h>
+#include <linux/time.h>
 #include "qixis.h"
 
 u8 qixis_read(unsigned int reg)
@@ -30,6 +31,51 @@  void qixis_write(unsigned int reg, u8 value)
 	out_8(p + reg, value);
 }
 
+u16 qixis_read_minor(void)
+{
+	u16 minor;
+
+	/* this data is in little endian */
+	QIXIS_WRITE(tagdata, 5);
+	minor = QIXIS_READ(tagdata);
+	QIXIS_WRITE(tagdata, 6);
+	minor += QIXIS_READ(tagdata) << 8;
+
+	return minor;
+}
+
+char *qixis_read_time(char *result)
+{
+	time_t time = 0;
+	int i;
+
+	/* timestamp is in 32-bit big endian */
+	for (i = 8; i <= 11; i++) {
+		QIXIS_WRITE(tagdata, i);
+		time =  (time << 8) + QIXIS_READ(tagdata);
+	}
+
+	return ctime_r(&time, result);
+}
+
+char *qixis_read_tag(char *buf)
+{
+	int i;
+	char tag, *ptr = buf;
+
+	for (i = 16; i <= 63; i++) {
+		QIXIS_WRITE(tagdata, i);
+		tag = QIXIS_READ(tagdata);
+		*(ptr++) = tag;
+		if (!tag)
+			break;
+	}
+	if (i > 63)
+		*ptr = '\0';
+
+	return buf;
+}
+
 void qixis_reset(void)
 {
 	QIXIS_WRITE(rst_ctl, QIXIS_RST_CTL_RESET);
diff --git a/board/freescale/common/qixis.h b/board/freescale/common/qixis.h
index b98b180..4d73461 100644
--- a/board/freescale/common/qixis.h
+++ b/board/freescale/common/qixis.h
@@ -88,6 +88,9 @@  struct qixis {
 
 u8 qixis_read(unsigned int reg);
 void qixis_write(unsigned int reg, u8 value);
+u16 qixis_read_minor(void);
+char *qixis_read_time(char *result);
+char *qixis_read_tag(char *buf);
 
 #define QIXIS_READ(reg) qixis_read(offsetof(struct qixis, reg))
 #define QIXIS_WRITE(reg, value) qixis_write(offsetof(struct qixis, reg), value)